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<?php |
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/** |
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* rdfa-lite |
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* |
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* @category Jkphl |
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* @package Jkphl\Rdfalite |
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* @subpackage Jkphl\Rdfalite\Application |
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* @author Joschi Kuphal <[email protected]> / @jkphl |
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* @copyright Copyright © 2017 Joschi Kuphal <[email protected]> / @jkphl |
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* @license http://opensource.org/licenses/MIT The MIT License (MIT) |
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*/ |
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/*********************************************************************************** |
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* The MIT License (MIT) |
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* |
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* Copyright © 2017 Joschi Kuphal <[email protected]> / @jkphl |
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* |
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* Permission is hereby granted, free of charge, to any person obtaining a copy of |
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* this software and associated documentation files (the "Software"), to deal in |
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* the Software without restriction, including without limitation the rights to |
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* use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of |
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* the Software, and to permit persons to whom the Software is furnished to do so, |
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* subject to the following conditions: |
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* |
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* The above copyright notice and this permission notice shall be included in all |
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* copies or substantial portions of the Software. |
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* |
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR |
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS |
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* FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR |
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* COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER |
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* IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN |
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* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. |
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***********************************************************************************/ |
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namespace Jkphl\Rdfalite\Application\Parser; |
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use Jkphl\Rdfalite\Application\Exceptions\OutOfBoundsException; |
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use Jkphl\Rdfalite\Application\Exceptions\RuntimeException; |
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use Jkphl\Rdfalite\Domain\Vocabulary\Vocabulary; |
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use Jkphl\Rdfalite\Domain\Vocabulary\VocabularyInterface; |
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/** |
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* Parsing context |
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* |
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* @package Jkphl\Rdfalite |
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* @subpackage Jkphl\Rdfalite\Application |
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*/ |
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class Context |
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{ |
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/** |
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* Default vocabularies and their prefixes |
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* |
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* @var array |
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* @see https://www.w3.org/2011/rdfa-context/rdfa-1.1 |
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* @link https://www.w3.org/2013/json-ld-context/rdfa11 |
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*/ |
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protected static $defaultVocabs = [ |
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'cat' => 'http://www.w3.org/ns/dcat#', |
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'qb' => 'http://purl.org/linked-data/cube#', |
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'grddl' => 'http://www.w3.org/2003/g/data-view#', |
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'ma' => 'http://www.w3.org/ns/ma-ont#', |
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'owl' => 'http://www.w3.org/2002/07/owl#', |
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'rdf' => 'http://www.w3.org/1999/02/22-rdf-syntax-ns#', |
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'rdfa' => 'http://www.w3.org/ns/rdfa#', |
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'rdfs' => 'http://www.w3.org/2000/01/rdf-schema#', |
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'rif' => 'http://www.w3.org/2007/rif#', |
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'rr' => 'http://www.w3.org/ns/r2rml#', |
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'skos' => 'http://www.w3.org/2004/02/skos/core#', |
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'skosxl' => 'http://www.w3.org/2008/05/skos-xl#', |
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'wdr' => 'http://www.w3.org/2007/05/powder#', |
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'void' => 'http://rdfs.org/ns/void#', |
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'wdrs' => 'http://www.w3.org/2007/05/powder-s#', |
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'xhv' => 'http://www.w3.org/1999/xhtml/vocab#', |
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'xml' => 'http://www.w3.org/XML/1998/namespace', |
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'xsd' => 'http://www.w3.org/2001/XMLSchema#', |
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'prov' => 'http://www.w3.org/ns/prov#', |
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'sd' => 'http://www.w3.org/ns/sparql-service-description#', |
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'org' => 'http://www.w3.org/ns/org#', |
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'gldp' => 'http://www.w3.org/ns/people#', |
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'cnt' => 'http://www.w3.org/2008/content#', |
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'dcat' => 'http://www.w3.org/ns/dcat#', |
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'earl' => 'http://www.w3.org/ns/earl#', |
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'ht' => 'http://www.w3.org/2006/http#', |
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'ptr' => 'http://www.w3.org/2009/pointers#', |
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'cc' => 'http://creativecommons.org/ns#', |
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'ctag' => 'http://commontag.org/ns#', |
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'dc' => 'http://purl.org/dc/terms/', |
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'dc11' => 'http://purl.org/dc/elements/1.1/', |
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'dcterms' => 'http://purl.org/dc/terms/', |
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'foaf' => 'http://xmlns.com/foaf/0.1/', |
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'gr' => 'http://purl.org/goodrelations/v1#', |
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'ical' => 'http://www.w3.org/2002/12/cal/icaltzd#', |
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'og' => 'http://ogp.me/ns#', |
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'rev' => 'http://purl.org/stuff/rev#', |
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'sioc' => 'http://rdfs.org/sioc/ns#', |
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'v' => 'http://rdf.data-vocabulary.org/#', |
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'vcard' => 'http://www.w3.org/2006/vcard/ns#', |
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'schema' => 'http://schema.org/', |
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'describedby' => 'http://www.w3.org/2007/05/powder-s#describedby', |
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'license' => 'http://www.w3.org/1999/xhtml/vocab#license', |
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'role' => 'http://www.w3.org/1999/xhtml/vocab#role' |
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]; |
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/** |
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* Registered vocabularies |
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* |
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* @var array |
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*/ |
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protected $vocabs; |
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/** |
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* Context constructor |
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*/ |
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public function __construct() |
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{ |
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$this->vocabs = self::$defaultVocabs; |
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} |
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/** |
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* Register a vocabulary and its prefix |
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* |
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* @param string $prefix Vocabulary prefix |
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* @param string $uri Vocabulary URI |
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* @return Context New context |
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* |
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*/ |
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public function registerVocabulary($prefix, $uri) |
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{ |
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$prefix = self::validateVocabPrefix($prefix); |
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$uri = Vocabulary::validateVocabUri($uri); |
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// Register the new URI |
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if (empty($this->vocabs[$prefix]) || ($this->vocabs[$prefix] !== $uri)) { |
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$context = clone $this; |
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$context->vocabs[$prefix] = $uri; |
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return $context; |
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} |
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return $this; |
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} |
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/** |
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* Validata a vocabulary prefix |
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* |
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* @param string $prefix Vocabulary prefix |
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* @return string Valid vocabulary prefix |
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* @throws RuntimeException If the vocabulary prefix is invalid |
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*/ |
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protected static function validateVocabPrefix($prefix) |
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{ |
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$prefix = trim($prefix); |
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// If the vocabulary prefix is invalid |
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if (!strlen($prefix)) { |
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throw new RuntimeException( |
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sprintf(RuntimeException::INVALID_VOCABULARY_PREFIX_STR, $prefix), |
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RuntimeException::INVALID_VOCABULARY_PREFIX |
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1 |
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); |
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} |
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return $prefix; |
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} |
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/** |
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* Return a particular vocabulary |
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* |
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* @param string $prefix Vocabulary Prefix |
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* @return VocabularyInterface Vocabulary |
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* @throws OutOfBoundsException If the prefix has not been registered |
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*/ |
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public function getVocabulary($prefix) |
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{ |
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$prefix = self::validateVocabPrefix($prefix); |
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// If the prefix has not been registered |
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if (empty($this->vocabs[$prefix])) { |
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throw new OutOfBoundsException( |
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sprintf(OutOfBoundsException::UNKNOWN_VOCABULARY_PREFIX_STR, $prefix), |
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OutOfBoundsException::UNKNOWN_VOCABULARY_PREFIX |
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); |
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} |
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return new Vocabulary($this->vocabs[$prefix]); |
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} |
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/** |
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* Return whether a particular vocabulary prefix has been registered |
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* |
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* @param string $prefix Vocabulary prefix |
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* @return bool Whether the prefix has been registered |
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*/ |
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public function hasVocabulary($prefix) |
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{ |
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return !empty($this->vocabs[self::validateVocabPrefix($prefix)]); |
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} |
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} |
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jkphl /
rdfa-lite-microdata
